Wrapping machine



J. A. HECKMAN WRAPPING MACHINE June l, 1943. l

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J. A. HECKMAN WRAPPING MACHINE Filed Nov. 17, 1941 June 1, 1943.

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WRAPPING MACHINE Filed NOV. 17, 1941 19 Sheets-Sheet 9 June 1, 1943. J. A. HECKMAN WRAPPING MACHINE Filed Nov. 1'7, 1941 19 Sheets-Sheet 10 June l', 1943.

J. A. Hr-:cKMAN 2,320,865

WRAPPING MACHINE Filed Nov. 17. 1941 19 Sheets-Sheet 11 June l, 1943. J. A. HECKMAN 2,320,865

WRAPPING MACHINE Filed Nov. 17, 1941 19 Sheets-Sheet l2 19 Sheets-Sheet 13 www.

June 1, 1943. J. A. HECKMAN WRAPPING MACHINE Filed Nov. 17, 1941 19 Sheets-Sheet 14 www June 1, 1943.

J. A. HECKMAN WRAPPING MACH-INE Filed Nov. 17, 1941 19 Sheets-Shea?I 15 June 1, 1943. J. A. HECKMAN wRAPPING MACHINE Filed NOV. 17, 1941 19 Sheets-Sheet 16 June l, 1943. J, A, HECKMAN 2,320,865

wRAPPING MACHINE Filed NOV. 17, 1941 19 Sheets-Sheet 17 i @Vjmy 19 Sheets-Sheet 18 J. A. HECKMAN WRAPPING MACHINE Filed NOV. 17. 1941 @QQ @NW June 1, 1943.

June' 1, 1943.l J. A. HECKMAN 2,320,865

WRAPPING MACHINE Filed Nov. 17, 1941 19 Sheets-Sheet 19 0 350 336 33:; .335 Il" o 5 ED m dll 334 s @45326 33o 52e o M4 234 I. 23 z/a 7 l l. I 332 I 534 eze 29 252 23 67 a e ssl 225 y 332 26o 247 54g 66 26a 246 53g 52a I 267 52 M2M 48 4e g3@ 0 Patented June 1, 1943 i WRAPrrNG MACHINE John A. Heckman, Chicago, Ill., assignor to Miller Wrapping and Sealing Machine Company, Chicago, Ill., a corporation of Illinois Application November 17, 1941, Serial No. 419,385

14 Claims.

The machine 0f the present invention is designed to apply a wrapper of paper, Cellcphane, or the like, to boxes or packages, preferably of rectangular shape, which are fed forwardly in processional relation to the wrapping point, and are there surrounded by a wrapper section cut from a continuous web fed transversely of the machine to a point where its center will register with the underlying package, after which the package will be elevated beneath the body of the wrapper, allowing the margins thereof to drape downwardly in position to have their edges overlap beneath the base of the package, after which the end wrapper extensions are tucked inwardly along the bottom and sides, which partially completes the wrapping operation at an intermediate level. Thereafter, the partially wrapped package is lifted to a higher level, which folds down the wrapper flaps projecting from the top of the package, thus completing the folding operation in preparation for a heat sealing operation, which occurs at the highest or discharge level and thus completes the operation in preparation for the discharge of the wrapped package.

The machine as a whole is designed to perform the package feeding and wrapper feeding operations automatically and in properly timed relation, and-to perform the flap tucking sequence at the proper time and at the proper level so that all f 1 operations involved in the complete wrapping and sealing of the package are automatically performed.

The machine is also designed to permit the necessary adjustments to accommodate the Wrapping of packages of varying size, without altering the order and sequence of operations, and in a manner which insures the proper centering of a wrapper section with respect t0 the package, regardless of the size thereof, so that in allcases, regardless of adjustments, the various movements will conform to the basic principle of operation, and the proper timing and range cf movements of the parts will be maintained.

Further objects and details'will appear from the description of the invention in conjunction with the accompanying drawings, wherein,

Figure l is a side elevation of the entire machine as viewed from the position occupied bythe operator, with the infeeding mechanism for the unwrapped packages projecting toward the left or front end of the machine, and it will be understood that in the principal views the machine is viewed from a similar position;

Fig. 2 is a plan view of the machine, showing the wrapper roll on the side opposite that illustrated in Fig. 1; y

Fig. 3 is a view looking from the rear end of the machine, which is the right hand end as illustrated in Fig. 1; f

Fig. 4 is a sectionaldetail through the package feeding mechanism shown at the left of Fig. 1;

Fig. 5 is a fra'gmental detail of the switch mechanism for stopping the operation of the motor where no packages are fed;

Fig. 6 is a cross sectional View of the feed mechanism, taken on line 6 6 of Fig. 4;

Fig. '7 is a View of the wrapper feeding mechanism, which feeds the wrapper transversely of the line of advance of the packages and severs sections therefrom to afford the individual wrappers;

Fig. 8 is a sectional view of the wrapper feeding mechanism shown in Fig. 7, illustrating the means provided for severing the wrapper sections ,and advancing them inwardly above the intended package and in registering relation therewith;

Fig. 9 is a perspective view of one of the brackets for holding the pressure roll which assists .in feeding the web to the cutters which sever the sections therefrom;

Fig. 10 is a diagrammatic view illustrating` the various steps involved `in applying a wrapper to a package, which as illustrated in full lines is lifted Vfrom the level illustrated at the left to an intermediate level where successive steps in folding the wrapper around the sides and ends of the box or package are performed, after which the wrapped package is lifted to the high level shown at the right of the figure; Y

Fig. 11 is a detail of the mechanism of Fig. 3, as Viewed from the line lI-I l, showing the means for adjusting the mechanism to cut off wrapper sections of the desired size;

l Fig. 12 is an enlarged vertical sectional view of the same mechanism;

Fig. 13 is a vertical sectional view taken on line I3-I3 of Fig. 2, showing details of the elevator mechanism for lifting the packages to the respective levels;

Fig. 14 is a similar fragmental View showing the elevator lifted to a higher level;

Fig. 15 is a detail showing a face view of the cutter knives, which are illustrated in section in Fig. 8;

Fig. 16 is an end detail of the same mechanism, taken on line lB-l of Fig. 15;

Fig. 17 is a view similar to Fig. 15, showing the movable knife lowered below its cutting position; 

